QUOTE(mrbubblehead @ May 6 2014, 09:28 PM)
thanks for the info pcar916. but im not quite sure what you mean by the exhaust. yes, i noticed my head do have 4 holes on the exhaust ports. 2 are unused. i was gonna see if its possible to swap the original headers to point backwards.
With the engine pointing in the correct direction in our 914's
the 914-6 headers will require that you to move the studs to the "other" two holes so they go to the rear of the car. You'll also need to order the metal exhaust seals to use in addition to the normal gaskets. They're a bit of a pain to get into position while the headers are going into place, but the heat transfer into the header will be better with than without them.
I thought about using the 993 headers and fabricating my own exhausts, using them as a core. But the heat-risers on the 993 headers are in the way and would have to be cut off anyway so it didn't seem worth the effort. It was so much easier to use some already made and weld in an O2 sensor bung in the collector, that I didn't have to do it.
I had carbs on the 2.7L engine before this one and they were great. I did have a lot of jets for tuning, but it always started and throttle response was excellent.
Good luck